For optimum performance, and the health of your hedges, you shouldn’t wait until the blades are showing signs of serious wear before sharpening them. The blades should be sharpened regularly after about every 50 hours of operation to maintain cutting performance.
Before you begin to sharpen, make sure any sap, resin residue, and dirt are removed from the blades, otherwise you could damage your file. As a rule of thumb, only sharpen the cutting edge. Ensure that the file does not come into contact with the integrated cut protection or, in the case of professional hedge trimmers, the orange plastic cut protection.
To ensure long-lasting cutting performance, follow these two steps.
1. Sharpen using a flat file
2. Remove burrs with a sharpening stone
For the second step, remove the burr from the bottom of the blade using a sharpening stone. After the blade has been sharpened, carefully clean the blades again removing any metal filings. Finally, spray the blades with resin-free spray to prevent the steel blades from rusting.
Of course, you can always take you hedge trimmer to your local STIHL dealer for professional sharpening. They will ensure the optimum sharpening angle at all times and ensure that not too much material is filed off.
Use our STIHL Dealer Locator to find a dealer near you.